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Background <p>Radiotherapy is a&#xa0;cornerstone of modern cancer treatment. With the growing number of long-term cancer survivors, radiation-induced late and long-term effects are becoming increasingly relevant. These effects may occur months to years after treatment, can affect multiple organ systems, and substantially impair quality of life. This review provides a&#xa0;practice-oriented overview of the mechanisms, risk factors, and clinical relevance of radiation-induced late toxicity.</p> Results <p>Late radiation effects result from persistent DNA damage, vascular dysfunction, chronic inflammation, and fibrotic tissue remodeling. Late-responding organs such as the central nervous system, heart, lungs, gastrointestinal and genitourinary tracts, and endocrine organs are particularly vulnerable. The risk is influenced by dose, fractionation, irradiated volume, patient-related factors, and systemic therapies. Modern radiotherapy techniques significantly reduce normal tissue exposure. Structured, risk-adapted follow-up, including organ-specific diagnostics, interdisciplinary collaboration, and patient-reported outcome measures, facilitates early detection and management. Differentiation between late toxicity, tumor recurrence, and secondary malignancies remains a&#xa0;major clinical challenge.</p> Conclusion <p>Radiation-induced late effects are complex and require interdisciplinary management. Although they may markedly impair quality of life, many patients benefit from modern radiotherapy techniques that could substantially reduce risks. Structured long-term follow-up with organ-specific surveillance and early intervention are essential to identify and treat late effects and to improve long-term outcomes for cancer survivors.</p>

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Langzeitfolgen nach Strahlentherapie

  • 期刊论文

  • 发表日期：

    2026年3月18日

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  • Cas Stefaan Dejonckheere,
  • Lukas Käsmann

摘要

Background

Radiotherapy is a cornerstone of modern cancer treatment. With the growing number of long-term cancer survivors, radiation-induced late and long-term effects are becoming increasingly relevant. These effects may occur months to years after treatment, can affect multiple organ systems, and substantially impair quality of life. This review provides a practice-oriented overview of the mechanisms, risk factors, and clinical relevance of radiation-induced late toxicity.

Results

Late radiation effects result from persistent DNA damage, vascular dysfunction, chronic inflammation, and fibrotic tissue remodeling. Late-responding organs such as the central nervous system, heart, lungs, gastrointestinal and genitourinary tracts, and endocrine organs are particularly vulnerable. The risk is influenced by dose, fractionation, irradiated volume, patient-related factors, and systemic therapies. Modern radiotherapy techniques significantly reduce normal tissue exposure. Structured, risk-adapted follow-up, including organ-specific diagnostics, interdisciplinary collaboration, and patient-reported outcome measures, facilitates early detection and management. Differentiation between late toxicity, tumor recurrence, and secondary malignancies remains a major clinical challenge.

Conclusion

Radiation-induced late effects are complex and require interdisciplinary management. Although they may markedly impair quality of life, many patients benefit from modern radiotherapy techniques that could substantially reduce risks. Structured long-term follow-up with organ-specific surveillance and early intervention are essential to identify and treat late effects and to improve long-term outcomes for cancer survivors.